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Myotonia Congenita
Adv Genet (2009)
  • Christoph Lossin, University of California, Davis
  • Alfred L. George, Vanderbilt University
Myotonia is a symptom of many different acquired and genetic muscular conditions that impair the relaxation phase of muscular contraction. Myotonia congenital is a specific inherited disorder of muscle membrane hyperexcitability caused by reduced sarcolemmal chloride conductance due to mutations invCLCN1, the gene coding for the main skeletal muscle chloride channel ClC-1.The disorder may be transmitted as either an autosomal-dominant or recessive trait with close to 130 currently known mutations. Although this is a rare disorder, elucidation of the pathophysiology underlying myotonia congenital established the importance of sarcolemmal chloride conductance in the control of muscle excitability and demonstrated the first example of human disease associated with the ClC family of chloride transporting proteins.
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Citation Information
Christoph Lossin and Alfred L. George. "Myotonia Congenita" Adv Genet Vol. 63 (2009)
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